Hey Conejo,
Welcome!
If his main goal is to reduce his 1 to 3 inch RES he can do that with just the LMB if they are 12 inches or better. If he could get a few 15 inch plus LMB in there that would really help. Between the LMB and culling them by fishing would be 2 ways you could go. You could saine the pond if possible and take out a bunch of the smaller RES. There are more qualified folks here though that may have better ideas than me. So hang in there for some more advise!!
